Breaking: #BrianLaundrie's Sister comes forward to ABC News in an interview to say that she spoke with her parents and that she's told them to tell authorities if they've helped Brian. She says she doesn't know if her parents have helped Brian or not, and that the last time that she's seen Brian was September 6 when he and their parents were on a camping trip. She intoned that she was upset with her brother because he didn't say goodbye. Not that he had killed his fiancée. #Disgusting. The whole family is disgusting. She also intoned that she cooperated with police since day one. #TheHuntForBrianLaundrie #GabbyPetito #JusticeForGabby